Port Union is a historical community overlooking Trinity Bay and Catalina Harbour, on the east side of the Bonavista Peninsula, Newfoundland and Labrador, Canada.

[1] William Coaker founded the town as the base for the Fishermen's Protective Union in 1916.

In 1999, the original part of the town and the nearby hydroelectric plant were designated a National Historic Site of Canada.

[2] In 2005, Port Union was amalgamated with Catalina and Melrose to form the town of Trinity Bay North.

This Newfoundland and Labrador location article is a stub.